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annotate graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/typesystem/TypeSystemCodeGenerator.java @ 7530:5e3d1a68664e

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applied mx eclipseformat to all Java files
author Doug Simon <doug.simon@oracle.com>
date Wed, 23 Jan 2013 16:34:57 +0100
parents a748e4d44694
children bdcb3cc47e16
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1 /*
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2 * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.codegen.processor.typesystem;
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25 import static com.oracle.truffle.codegen.processor.Utils.*;
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26 import static javax.lang.model.element.Modifier.*;
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28 import java.util.*;
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30 import javax.lang.model.element.*;
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31 import javax.lang.model.type.*;
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33 import com.oracle.truffle.codegen.processor.*;
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34 import com.oracle.truffle.codegen.processor.ast.*;
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35 import com.oracle.truffle.codegen.processor.template.*;
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37 public class TypeSystemCodeGenerator extends CompilationUnitFactory<TypeSystemData> {
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38
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39 public TypeSystemCodeGenerator(ProcessorContext context) {
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40 super(context);
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41 }
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43 public static String isTypeMethodName(TypeData type) {
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44 return "is" + Utils.getSimpleName(type.getBoxedType());
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45 }
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47 public static String asTypeMethodName(TypeData type) {
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48 return "as" + Utils.getSimpleName(type.getBoxedType());
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49 }
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51 public static String expectTypeMethodName(TypeData type) {
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52 return "expect" + Utils.getSimpleName(type.getBoxedType());
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53 }
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55 /**
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56 * Finds the generated singleton field for a TypeSytemData instance. TypeSystemCodeGenerator
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57 * must be applied to the TypeSystemData model before use.
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58 */
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59 public static VariableElement findSingleton(ProcessorContext context, TypeSystemData typeSystem) {
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60 TypeMirror type = context.findGeneratedClassBySimpleName(TypeClassFactory.typeName(typeSystem), typeSystem);
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61 return Utils.findDeclaredField(type, TypeClassFactory.singletonName(typeSystem.getTemplateType().asType()));
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62 }
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63
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64 @Override
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65 protected void createChildren(TypeSystemData m) {
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66 add(new TypeClassFactory(context), m);
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67 }
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69 protected static class TypeClassFactory extends ClassElementFactory<TypeSystemData> {
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71 private static final String LOCAL_VALUE = "value";
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73 public TypeClassFactory(ProcessorContext context) {
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74 super(context);
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75 }
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77 @Override
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78 public CodeTypeElement create(TypeSystemData typeSystem) {
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79 String name = typeName(typeSystem);
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80 CodeTypeElement clazz = createClass(typeSystem, modifiers(PUBLIC), name, typeSystem.getTemplateType().asType(), false);
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82 clazz.getImplements().add(getContext().getTruffleTypes().getTypeConversion());
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84 clazz.add(createConstructorUsingFields(modifiers(PROTECTED), clazz));
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85 CodeVariableElement singleton = createSingleton(clazz);
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86 clazz.add(singleton);
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87
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88 clazz.add(createGetTopType(typeSystem));
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89 clazz.add(createConvertTo(typeSystem, singleton));
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91 for (TypeData type : typeSystem.getTypes()) {
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92 if (!type.isGeneric()) {
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93 CodeExecutableElement isType = createIsTypeMethod(type);
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94 if (isType != null) {
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95 clazz.add(isType);
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96 }
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97 CodeExecutableElement asType = createAsTypeMethod(type);
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98 if (asType != null) {
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99 clazz.add(asType);
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100 }
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102 for (TypeData sourceType : collectExpectSourceTypes(type)) {
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103 CodeExecutableElement expect = createExpectTypeMethod(type, sourceType);
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104 if (expect != null) {
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105 clazz.add(expect);
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106 }
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107 }
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108 }
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109 }
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110
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111 clazz.getEnclosedElements().addAll(typeSystem.getExtensionElements());
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112
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113 return clazz;
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114 }
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115
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116 private static List<TypeData> collectExpectSourceTypes(TypeData type) {
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117 Set<TypeData> sourceTypes = new HashSet<>();
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118 sourceTypes.add(type.getTypeSystem().getGenericTypeData());
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119 for (TypeCastData cast : type.getTypeCasts()) {
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120 sourceTypes.add(cast.getSourceType());
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121 }
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122 for (TypeCheckData cast : type.getTypeChecks()) {
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123 sourceTypes.add(cast.getCheckedType());
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124 }
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125 return new ArrayList<>(sourceTypes);
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126 }
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127
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128 private CodeExecutableElement createConvertTo(TypeSystemData typeSystem, CodeVariableElement singleton) {
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129 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), getContext().getType(Object.class), "convertTo");
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130 method.addParameter(new CodeVariableElement(getContext().getType(Class.class), "targetType"));
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131 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), "value"));
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132
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133 CodeTreeBuilder builder = method.createBuilder();
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134
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135 boolean first = true;
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136 for (TypeData type : typeSystem.getTypes()) {
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137 if (first) {
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138 builder.startIf();
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139 first = false;
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140 } else {
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141 builder.startElseIf();
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142 }
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143 builder.string("targetType").string(" == ").typeLiteral(type.getBoxedType());
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144 builder.end(); // if
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145 builder.startBlock();
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146
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147 builder.startReturn();
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148
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149 if (typeEquals(type.getBoxedType(), getContext().getType(Object.class))) {
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150 builder.string("value");
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151 } else {
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152 builder.string(singleton.getName()).string(".").startCall(asTypeMethodName(type)).string("value").end();
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153 }
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154
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155 builder.end(); // return
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156
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157 builder.end(); // block
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158 }
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159
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160 builder.startThrow().startNew(getContext().getType(IllegalArgumentException.class)).end().end();
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161
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162 return method;
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163 }
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164
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165 private CodeExecutableElement createGetTopType(TypeSystemData typeSystem) {
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166 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), getContext().getType(Class.class), "getTopType");
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167
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168 CodeTreeBuilder builder = method.createBuilder();
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169 builder.startReturn();
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170 if (typeSystem.getTypes().length > 0) {
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171 builder.typeLiteral(typeSystem.getTypes()[0].getBoxedType());
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172 } else {
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173 builder.null_();
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174 }
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175 builder.end(); // return
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176
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177 return method;
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178 }
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179
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180 private static String typeName(TypeSystemData typeSystem) {
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181 String name = getSimpleName(typeSystem.getTemplateType());
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182 return name + "Gen";
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183 }
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184
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185 private static String singletonName(TypeMirror type) {
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186 return createConstantName(getSimpleName(type));
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187 }
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188
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189 private CodeVariableElement createSingleton(CodeTypeElement clazz) {
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190 CodeVariableElement field = new CodeVariableElement(modifiers(PUBLIC, STATIC, FINAL), clazz.asType(), singletonName(getModel().getTemplateType().asType()));
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191 field.createInitBuilder().startNew(clazz.asType()).end();
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192 return field;
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193 }
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194
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195 private CodeExecutableElement createIsTypeMethod(TypeData type) {
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196 if (!type.getTypeChecks().isEmpty()) {
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197 return null;
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198 }
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199
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200 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), getContext().getType(boolean.class), TypeSystemCodeGenerator.isTypeMethodName(type));
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201 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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202
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203 CodeTreeBuilder body = method.createBuilder();
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204 body.startReturn().instanceOf(LOCAL_VALUE, type.getBoxedType()).end();
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205
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206 return method;
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207 }
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209 private CodeExecutableElement createAsTypeMethod(TypeData type) {
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210 if (!type.getTypeCasts().isEmpty()) {
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211 return null;
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212 }
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213
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214 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), type.getPrimitiveType(), TypeSystemCodeGenerator.asTypeMethodName(type));
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215 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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217 CodeTreeBuilder body = method.createBuilder();
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218 body.startReturn().cast(type.getPrimitiveType(), body.create().string(LOCAL_VALUE).getTree()).end();
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220 return method;
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221 }
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223 private CodeExecutableElement createExpectTypeMethod(TypeData expectedType, TypeData sourceType) {
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224 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), expectedType.getPrimitiveType(), TypeSystemCodeGenerator.expectTypeMethodName(expectedType));
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225 method.addParameter(new CodeVariableElement(sourceType.getPrimitiveType(), LOCAL_VALUE));
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226 method.addThrownType(getContext().getTruffleTypes().getUnexpectedValueException());
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228 CodeTreeBuilder body = method.createBuilder();
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229 body.startIf().startCall(null, TypeSystemCodeGenerator.isTypeMethodName(expectedType)).string(LOCAL_VALUE).end().end().startBlock();
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230 body.startReturn().startCall(null, TypeSystemCodeGenerator.asTypeMethodName(expectedType)).string(LOCAL_VALUE).end().end();
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231 body.end(); // if-block
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232 body.startThrow().startNew(getContext().getTruffleTypes().getUnexpectedValueException()).string(LOCAL_VALUE).end().end();
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234 return method;
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235 }
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236 }
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237 }